If the speed of lights is $3.0 \times 10^{8}\;ms^{-1}$. calculate the distance covered by light in 2.00 ns

Question

$\begin{array}{1 1} (a)\;0.700\;m \\ (b)\; 0.600\;m \\ (c)\;0.500\;m \\ (d)\;0.400\;m \end{array} $